@inproceedings{torsten2001the,
title={The order of the top Chern class of the Hodge bundle on the moduli space of abelian varieties},
author={Torsten Ekedahl, and Gerard Van Der Geer},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203344200283647},
booktitle={Acta Mathematica},
volume={192},
number={1},
pages={95-109},
year={2001},
}
Torsten Ekedahl, and Gerard Van Der Geer. The order of the top Chern class of the Hodge bundle on the moduli space of abelian varieties. 2001. Vol. 192. In Acta Mathematica. pp.95-109. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203344200283647.